I would think that by early April 2010 there were doubts in the family about a marriage between Madeleine and Jonas. If Madeleine and Jonas had had any plans for a wedding in 2010, it would have been unlikely planned before mid-October, probably not until November, as 2010 was an election year in Sweden and I don't think that the royal family would have wanted to have a wedding in the middle of an election campaign. The election day was September 19, and with the possibility of a change of government, mid-October would have been the earliest possible date. Spring/Summer 2011 would have been a better bet.